add_menu_page documentation says to pass the menu title as the second parameter:
add_menu_page('Page Title', 'Menu Title', ...);
When adding more pages later via
add_submenu_page, the main page becomes the first entry in the submenu:
However, I want the first item in the list to have a different name (but still point to the same page), the way Wordpress itself does it:
How could I accomplish that in my plugin?